Unusual Engine Compartment Noise
A continuous unusual noise from the engine compartment could indicate a failing accessory belt, a worn pulley bearing, or a loose component. The noise is present all the time, suggesting a mechanical issue that should be inspected promptly to prevent further damage.
Diagnosis Details
Possible Causes
Worn or loose serpentine/accessory belt causing squealing or chirping
Failing pulley bearing (alternator, water pump, tensioner, or idler) producing a grinding or rumbling noise
Loose heat shield or other engine compartment component vibrating
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What You Should Do
Inspect the serpentine belt for cracks, glazing, or looseness.
Check each pulley by hand for roughness or play.
Listen with a mechanic's stethoscope to isolate the noise source.
Tighten any loose components or replace worn parts as needed.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
